Many people know that Mimosa is a kind of plant. It closes at the touch of a leaf. I think that's the name of Mimosa. When I was a child, I played Mimosa when I had nothing to do. When I touched a leaf, it would close. So why is Mimosa shy?
Why Mimosa is shy
In the position of petiole and leaf base of Mimosa, there is an expanding part, which is called leaf pillow. The leaf pillow is the core reason why Mimosa is shy. There is a vascular bundle in the middle of the leaf pillow, which is full of parenchyma. When the occipitum, which is most sensitive to stimulation, is touched, the cell fluid of parenchyma cells in the upper part of the occipitum will be discharged, resulting in the imbalance of expansion pressure between the upper and lower parts of the occipitum, resulting in the closure and droop of the leaves.
The second reason why Mimosa is shy
Plants and animals are not the same, plants have no nervous system, no muscle, will not sense the stimulation of the outside world, but why Mimosa shy is related to the nervous system. Mimosa is supported by a network of small kinesin. When it is closed, the kinesin will fall off and produce a closed movement. There are muscle fibers in femoral animal protein, which is very rare in plants.
There are times when Mimosa is not shy. It's not a fake Mimosa, but for a reason. It takes time for the leaves of Mimosa to close after being stimulated and then recover. If we constantly stimulate it, tease it, it will produce a sense of 'boredom', no longer any reaction, that is, we often say no longer shy phenomenon. In addition, when the temperature is low in winter and Mimosa is extremely short of water, the closure characteristics of Mimosa will gradually disappear.